Publication
Journal Papers (* indicates the corresponding author)
[J23] Yu Zhao, Yeongjin Kim* and Joohyun Lee*, "SOQ: Structural Reinforcement Learning for Constrained Delay Minimization with Channel State Information," IEEE Internet of Things Journal (IoTJ), 2023 (IF: 10.6), accepted (early access).
[J22] Siryeol Lee, Juncheol Lee, Juntae Park, Jiwoo Park, Dohoon Kim, Joohyun Lee*, and Jaehoon Oh*, "Deep learning-based natural language processing for detecting medical symptoms and histories in emergency patient triage," American Journal of Emergency Medicine, 2023 (accepted).
[J21] Xinxing Zheng, Yu Zhao, Joohyun Lee*, Wei Chen, "Multi-agent deep reinforcement learning for cross-layer scheduling in mobile ad-hoc networks", China Communications, vol. 20, no. 8, pp. 78-88, 2023.
[J20] Dongwoo Lee, Yu Zhao, Jun-Bae Seo*, and Joohyun Lee*, “Multi-agent reinforcement learning for a random access game,” IEEE Transactions on Vehicular Technology, 2022.
[J19] Yuanrui Liu, Joohyun Lee*, and Wei Chen*, "Buffer-Aware Scheduling and Power Allocation for CoMP Transmission with Large-Scale Antennas," IEEE Transactions on Wireless Communications, 2022.
[J18] Yuanrui Liu, Wei Chen*, and Joohyun Lee*, "Joint Queue-Aware and Channel-Aware Scheduling for Non-Orthogonal Multiple Access," IEEE Transactions on Wireless Communications, 2022.
[J17] Taeseob Oh, Dongkyun Kim, Siryeol Lee, Changwon Won, Sunyoung Kim, Ji‑soo Yang, Junghwa Yu, Byungsung Kim*, and Joohyun Lee*, "Machine learning‑based diagnosis and risk factor analysis of cardiocerebrovascular disease based on KNHANES," Scientific Reports, 2022.
[J16] Jeongmin Bae, Joohyun Lee* and Song Chong*, “Learning to Schedule Network Resources Throughput and Delay Optimally using Q+-Learning,” IEEE/ACM Transactions on Networking, 2021.
[J15] Wooseung Nam, Joohyun Lee*, Ness B. Shroff, Kyunghan Lee*, “An Inter-data Encoding Technique that Exploits Synchronized Data for Network Applications,” IEEE Transactions on Mobile Computing (IF: 4.474), 2021.
[J14] Jae Yoon Na, Dongkyun Kim, Amy M. Kwon, Jin Yong Jeon, Hyuck Kim, Chang‑Ryul Kim, Hyun Ju Lee, Joohyun Lee*, Hyun‑Kyung Park*, "Artificial intelligence model comparison for risk factor analysis of patent ductus arteriosus in nationwide very low birth weight infants cohort," Scientific Reports, 2021.
[J13] Dongkyun Kim, Jaehoon Oh, Heeju Im, Myeongseong Yoon, Jiwoo Park, and Joohyun Lee, "Automatic Classification of the Korean Triage Acuity Scale in Simulated Emergency Rooms Using Speech Recognition and Natural Language Processing: a Proof of Concept Study," Journal of Korean Medical Science, 2021.
[J12] Yu Zhao, Joohyun Lee*, and Wei Chen, "Q-greedyUCB: A new exploration policy to learn resource-efficient scheduling," China Communications, 2021.
[J11] Xiaoyu Zhao, Wei Chen*, Joohyun Lee, and Ness B. Shroff, “Delay-Optimal and Energy-Efficient Communications with Markovian Arrivals,” IEEE Transactions on Communications (IF:4.058), 2020.
[J10] Joohyun Lee, Jaewook Kwak, Hyang-Won Lee*, and Ness B. Shroff, “Finding Minimum Node Separators: A Markov Chain Monte Carlo Method,” Reliability Engineering & System Safety (RESS) (IF: 3.153), vol. 178, pp. 225-235, October 2018.
[J9] Sunjung Kang, Changhee Joo*, Joohyun Lee*, and Ness B. Shroff, “Pricing for Past Channel State Information in Multi-Channel Cognitive Radio Networks,” IEEE Transactions on Mobile Computing, vol. 17, no. 4, pp. 859-870, 2018.
[J8] Joohyun Lee, Kyunghan Lee*, Euijin Jeong, Jaemin Jo, and Ness B. Shroff, “CAS: Context-aware Background Application Scheduling in Interactive Mobile Systems,” IEEE Journal on Selected Areas in Communications - Special issue on Human-In-The-Loop Mobile Networks (IF: 3.672), vol. 35, no. 5, pp. 1013-1029, 2017.
[J7] Xiang Chen, Wei Chen*, Joohyun Lee, and Ness B. Shroff, “Delay-Optimal Buffer-Aware Scheduling with Adaptive Transmission,” IEEE Transactions on Communications (IF: 2.298), vol. 65, no. 7, pp. 2917-2930, 2017.
[J6] Joohyun Lee, Kyunghan Lee*, Yeongjin Kim and Song Chong, “CarrierMix: How Much Can User-side Carrier Mixing Help?,” IEEE Transactions on Mobile Computing (IF: 2.456), vol. 16, no. 1, pp. 16-29, 2017.
[J5] Joohyun Lee, Kyunghan Lee*, Choongwoo Han, Taehoon Kim and Song Chong, “Resource-efficient Mobile Multimedia Streaming with Adaptive Network Selection,” IEEE Transactions on Multimedia (IF: 2.536), vol. 18, no. 12, pp. 2517-2527, December 2016.
[J4] Jeongho Kwak, Yeongjin Kim*, Joohyun Lee, and Song Chong, “DREAM: Dynamic Resource and Task Allocation for Energy Minimization,” IEEE Journal on Selected Areas in Communications - Series on Green Communications and Networking (IF:3.672), vol. 33, no. 12, pp. 2510-2523, December 2015.
[J3] Joohyun Lee*, Yung Yi, Song Chong and Youngmi Jin, “Economics of WiFi Offloading: Trading Delay for Cellular Capacity,” IEEE Transactions on Wireless Communications (IF: 2.925), vol. 13, no. 3, pp. 1540-1554, March 2014.
[J2] Kyunghan Lee, Joohyun Lee*, Yung Yi, Injong Rhee and Song Chong, “Mobile Data Offloading: How Much Can WiFi Deliver?,” IEEE/ACM Transactions on Networking (IF: 2.576), vol. 21, no. 2, pp. 536-550, April 2013 (Google citation count: 163).
[J1] Jihwan Kim*, Joohyun Lee, Kyuho Son, Seungho Song and Song Chong, “Two-hop Opportunistic Scheduling in Cooperative Cellular Networks,” IEEE Transactions on Vehicular Technology (IF: 2.243), vol. 16, no. 9, pp. 1388-1391, September 2012.
Conference Papers
[C19] Yuanrui Liu, Joohyun Lee, Yuxing Han, and Wei Chen, "Lyapunov Drift-Based Scheduling for Short-Packet Transmission with Finite Blocklength Coding," accepted in IEEE GLOBECOM 2022, Rio de janeiro + Online, Dec. 2022
[C18] Dongwon Lee, Dongwoo Lee, Minji Choi, Joohyun Lee, “Prediction of Network Throughput using ARIMA,” ICAIIC, Fukuoka, Japan, February 2020.
[C17] Yu Zhao, Joohyun Lee, “A Reinforcement Learning Based Low-Delay Scheduling With Adaptive Transmission,” ICTC, Jeju, South Korea, October 2019.
[C16] Jeongmin Bae, Joohyun Lee, and Song Chong, “Beyond Max-weight Scheduling: A Reinforcement Learning-based Approach,” IEEE WiOpt (International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks), Avignon, France, June 2019.
[C15] Jiashang Liu, Joohyun Lee, Ness B. Shroff, Prasun Sinha, and Sinong Wang, “A Near-Optimal Control Policy in Cloud Systems with Renewable Sources and Time-dependent Energy Price,” IEEE Cloud Computing (CLOUD), San Francisco, CA, July 2018.
[C14] Fang Liu, Joohyun Lee, and Ness B. Shroff, “A Change-Detection based Framework for Piecewise-stationary Multi-Armed Bandit Problem,” AAAI (Acceptance Rate: 24.5% = 933/3800), New Orleans, Louisiana, February 2018.
[C13] Joohyun Lee, Fang Liu, Kyunghan Lee, and Ness B. Shroff, “iMUTE: Energy-optimal Update Policy for Perishable Mobile Contents,” IEEE ICNP (Acceptance Rate: 18.66%=39/209), Toronto, Canada, 2017.
[C12] Wooseung Nam, Joohyun Lee, and Kyunghan Lee, “SyncCoding: A Compression Technique Exploiting References for Data Synchronization Services,” IEEE ICNP (Acceptance Rate: 18.66%=39/209), Toronto, Canada, 2017.
[C11] Xiang Chen, Wei Chen, Joohyun Lee, and Ness B. Shroff, “Delay-Optimal Probabilistic Scheduling in Green Communications with Arbitrary Arrival and Adaptive Transmission,” IEEE ICC, Paris, France, 2017.
[C10] Joohyun Lee, Jaewook Kwak, Hyang-Won Lee, and Ness B. Shroff, “Finding Minimum Node Separators: A Markov Chain Monte Carlo Method,” International Conference on Design of Reliable Communication Networks (DRCN), Munich, Germany, 2017.
[C9] Joohyun Lee, Kyunghan Lee, Euijin Jeong, Jaemin Jo, and Ness B. Shroff, “Context-aware Application Scheduling in Mobile Systems: What Will Users Do and Not Do Next?,” ACM UbiComp (Ubiquitous Computing) (Acceptance Ratio: 23.7% = 114/481), Heidelberg, Germany, 2016.
[C8] Sunjung Kang, Changhee Joo, and Joohyun Lee, “Pricing for Past Channel State Information in Multi-Channel Cognitive Radio Networks,” IEEE WiOpt, Tempe, Arizona, 2016.
[C7] Yeongjin Kim, Joohyun Lee, Jaeseong Jeong, and Song Chong, “Multi-flow Rate Control in Delayed Wi-Fi Offloading Systems,” ICOIN, January 2016.
[C6] Joohyun Lee, Kyunghan Lee, Yeongjin Kim and Song Chong, “PhonePool: On Energy-efficient Collaborative Tethering with Provider Aggregation,” IEEE SECON (Acceptance Ratio: 19.9% = 68/342), Singapore, July 2014. [Slides]
[C5] Joohyun Lee, Yung Yi, Youngmi Jin and Song Chong, “Economics of WiFi Offloading: Trading Delay for Cellular Capacity,” IEEE INFOCOM SDP workshop, Turin, Italy, April 2013. [Slides]
[C4] Kyunghan Lee, Joohyun Lee, Yung Yi, Injong Rhee and Song Chong, “Mobile Data Offloading: How Much Can WiFi Deliver?,” ACM CoNEXT (Acceptance Ratio: 19.0% = 28/147), Philadelphia, PA, December 2010.
[C3] Kyunghan Lee, Joohyun Lee, Yung Yi, Injong Rhee and Song Chong, “Mobile Data Offloading: How Much Can WiFi Deliver?,” ACM SIGCOMM poster session, New Delhi, India, September 2010.
[C2] Jaeseong Jeong, Joohyun Lee, Yeongjin Kim, Jae Woong Lee and Song Chong, “Impact of Surrounding Information on Wi-Fi Sensing Efficiency,” ICTC, Jeju, Korea, October 2013.
[C1] Joohyun Lee, Kyunghan Lee, Jaesung Jung, and Song Chong, "Performance Evaluation of a DTN as a City-wide Infrastructure Network," International Conference on Future Internet Technologies (CFI), June 2009.
Theses
Ph. D. thesis, “Mobility-driven Wireless Offloading System: Architecture, Scheduling and Economic Analysis,” Department of Electrical Engineering, Korea Advanced Institute of Science and Technology.
Korean Journal and Conference Papers
[6] Jaeseong Jeong, Kyunghan Lee, Joohyun Lee and Song Chong, “DTN Routing Method using Spatial Regularity in Urban Area,” The Journal of Korea Information and Communication Society, vol. 36, no. 6, pp. 551-625, 2011.
[5] Joohyun Lee, Kyuho Son, Jeongho Jeong and Song Chong, “Efficient resource allocation in an uplink two-hop-relay cellular system,” Journal of Information Network Society, vol. 23, no. 3, 2009.
[4] Joohyun Lee, Yung Yi and Song Chong, “Congestion-Dependent Pricing in Heterogeneous Networks,” SWCC, August 2011.
[3] Jaeseong Jeong, Kyunghan Lee, Joohyun Lee and Song Chong, “DTN Routing Method using Spatial Regularity in Urban Area,” JCCI (Joint Conference on Communications and Information), April 2010.
[2] Jihwan Kim, Joohyun Lee, Kyuho Son and Song Chong, “An efficient mobile relay selection algorithm in a cellular system with group mobility model,” JCCI (Joint Conference on Communications and Information), April 2010.
[1] Joohyun Lee, Kyuho Son, Jeongho Jeon and Song Chong “Spatial reuse in an uplink cellular system with relay stations,” JCCI (Joint Conference on Communications and Information), April 2008.
Patents
[P9] Bongchan Kim, Song Chong, Soonyoung Yoon, Jihyun Lee, Joohyun Lee, Youngki Kim and Kyuho Son, “Apparatus and method for supporting peer to peer communication in broadband wireless communication system,” US Patent, Publication number: US 8,295,241 B2, October 23, 2012.
[P8] Song Chong, Yung Yi, Kyoungsoo Park and Joohyun Lee, “Apparatus and method for reserved transmission of non-real-time content in heterogeneous network environment,” US Patent, Publication number: US9609563 B2, June 25, 2015.
[P7] Bongchan Kim, Song Chong, Soonyoung Yoon, Jihyun Lee, Joohyun Lee, Youngki Kim and Kyuho Son, “Apparatus and method for supporting peer to peer communication in broadband wireless communication system,” Korea Patent, Publication number: 1014822010, November 7, 2015.
[P6] Song Chong, Yung Yi, Kyoungsoo Park and Joohyun Lee, “Apparatus and method for reserved transmission of non-real-time content in heterogeneous network environment,” International PCT (Patent Cooperation Treaty), Application number: PCT/KR2012/010475, December 5, 2012.
[P5] Joohyun Lee, Yung Yi, Kyoungsoo Park and Song Chong, “Method and Apparatus for providing a reservation transmission of non-realtime content in heterogeneous network environment,” Korea Patent, Publication number: 101408642, June 11, 2014.
[P4] Sangil Lee, Song Chong, Joohyun Lee and Jihwan Kim, “Method for transferring data using mobile relay in network with group mobility and device thereof,” Korea Patent, Publication number: 101153301, May 5, 2012.
[P3] Sangil Lee, Song Chong, Joohyun Lee and Jihwan Kim, “Method for data transmitting and receiving of a base station and mobile terminals, and data transmitting system,” Korea Patent, Publication number: 101337539, November 29, 2013.
[P2] Sangil Lee, Song Chong, Jihwan Kim and Joohyun Lee, “Device for transferring data, method for transferring data and system for transferring data using service level agreement information,” Korea Patent, Publication number: 101339106, December 3, 2013.
[P1] Song Chong, Yeongjin Kim, Joohyun Lee, Jaesung Jung, “Method for Scheduling Data Transmission in Heterogeneous Network,” Korea Patent, Publication number: 101537991, July 14, 2015.